Despite with sales frequently being available, Bungie is competing with Paradox Interactive for who can be more greedy in their monetization.
One struggles to even buy a DLC that is discounted, because without the DLC+Annual pass ($100 version and rarely/never on sale unless the next DLC is weeks away) one cannot readily play the dungeons that are included with the $100 purchase. You can buy a "Dungeon Pass" in-game with silver, which begs the question as to why it isn't just sold directly on Steam....?
Fear not Review Reader! As my guess is that it is likely to increase their profits for silver purchases made by players on Epic as they take a lower cut, and... in Bungie's business strategy if they can exploit a situation to their gain at the cost of members of their community they sure as h*ll will.

Just think about that for a second.... Bungie's greed is so pervasive in their business practices that, the only way to get a 'complete' experience is to buy a $100 DLC+Annual pass prior to or on release. So lets do the math!
1. Each season costs 1200 Silver, but they don't sell this amount so you're actually buying 1500 Silver at $15.
2. There are four 'seasons' for each annual pass, so theoretically the annual pass is including the cost of $60 worth of their content.
3. The dungeon pass is 2000 Silver or rather $20.
4. The base MSRP of the DLC individually purchased is $50.

To note....the actual DLC's value is $20, is what we can derive from the initial cost of $100, but the 'typical' MSRP of the DLC is $50, a markup of 250% its perceived value. 'BUT!' I hear you say, 'You're saving money because it's bundled', and to you I say 'True...but!' where this logic breaks down in saving money because of a bulk purchase being discounted from its otherwise base MSRP of $50 is that for each season that goes by, the Annual Pass's value diminishes. As an example, at the time of writing this review, the annual pass's actual value is $15, as the prior three seasons to the current one are vaulted content (e.g. the leveling 1-100 rewards for each of the prior three seasons are no longer achievable.), and of whatever content has remained it is not to the same value as the current season that is taking place. This means that as it stands currently the DLC+Annual pass is worth $55, but costs $100; a markup of 181%.

So.....prior to launch or at the launch of a new DLC, you are getting 100% of the DLC+Annual Passes value, but in any season afterwards if one decides to come back to the game you will always be in a position of being taken advantage of by this business model of FOMO (psychological manipulation), exploitation, and greed.

More math!
At the time of writing this review, the DLC is discounted by 67%, but realistically it is only discounted by 17.55% of the DLC's actual value of $20. If I were to come back to the game right now and purchase whatever I need to, so as to have access to the content that has been added since my absence. I would need to spend:
DLC: $16.49
Current Season: $15
Dungeon Pass: $20
Equaling, a cost to me of $51.49. Whereas, Bungie is still charging full price for the DLC+Annual pass at $100, but it itself only contains $55 worth of value. So, my dear reader if you've stayed with me for this long in my rambling review, that means for the actual value of the goods you are purchasing if you go the long route, is graciously given to you at a discount of roughly 6.38%.

I've written all this, and discussed the math behind it to not only provide you with some hard numbers of the costs, but to also illustrate the deceptive and loathsome levels of greed at play on the part of Bungie. While exploitative business practices associated with the use of FOMO in a video game is its own subject for different discussion and rant, Bungie goes one step further down that dark road of late-stage capitalism in obfuscating costs, 'fake' discounts, and generally distasteful sales strategy.

I was enticed by "The Final Shape"'s dev-blog, as its associated features appealed to me, and it allured me to considering potentially coming back to the game. I was further tempted when I found the DLC for "Lightfall" was on sale; coincidence? I think not. Fortunately, I was spared by my temptations, when I saw what was an almost forgotten sight to me of "Mostly Negative" when I clicked on the DLC. This happenstance nudged me to read a few of the reviews posted recently for the DLC, and within them I was then reminded that while this 'discount' for Lightfall was appealing, it was not true to the costs I would need to bare to actually return to the game. At that moment of realization, I recalled all the disappointment that I had experienced from Destiny 2 since the release of Shadowkeep, and thought to myself 'I've been down this road before, and I know where it leads.'.

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A bit of background and additions....if you care to know a bit more of my insight and my lengthy rant left you famished for more of my writings. The Final Shape dev-blog does fill me with some hope, but after years and years of this same runaround, I cannot ignore that Bungie in their business practices and development efforts has consistently failed to provide me an experience that is worth the prices that they ask. As a PVP main... *imagines that everyone whose read up until this point has now physically recoiled in their chair at reading that*, I feel that Bungie has essentially lied multiple times to this community, and has betrayed all trust and goodwill that they are deserving of. I say the PVP part, because I was also encouraged by the PVP news that I've seen over the last 10 months or so for the game, but.... being a top 500 PVP'er at multiple times through D1 and D2, I accepted long ago that PVP was not Bungie's focus and that while the recent changes seem promising, Bungie sadly has always managed to fail at meeting even my lowest expectations. It makes me sad thinking about Destiny 1/2, I have melancholy for the memories with friends, flashes of elation for recalling getting Vex Mythoclast and Gjallarhorn in the same raid of VoG in D1, pulses of frustration carrying people through trials, a story so poorly told that one doesn't question why we (the player) let the ghost do all the talking for us, etc. a wide myriad of experiences to look back on when discussing a game that has been more or less part of our culture for almost 10 years. On recalling all that is D2, how can I recommend this game as a PVP player?
TTK is still very low, so low in some respects that human reaction when combined with latency creates situations impossible for one player to counter the other.
Spawns are just as poorly planned out and thought through as they were in Halo 2, Bungie in their design essentially encourages spawn-camping.
Game-modes so stale and outdated that rations from WW2 look fresh in comparison.
Loot/weapons and gear stats linked to FOMO, that then causes unbalanced levels of play.
No actual rewards beyond skins/cosmetic when achieving victory at high levels of competitive play (trials/comp).
Sandbox changes that then negatively impact PVP because someone was cheesing a raid or dungeon.
The vast majority of exotics being tied to PVE, with those few somewhat useful in PVP being curtailed by PVE balancing.
A large swath of Weapon archetypes being non-viable because of maps/spawns/game-modes.
Special ammo's ease of access increasing the frequency of 1-hit KO's.
Most 'new' exotics being typically DOA for PVP.
Vaulted maps that I paid for.
....The list goes on.

Suffice to say I actually have a lot to say about why I wouldn't recommend this game to others, and that sucks. It sucks because of the potential that Destiny represents as it is now and in the past, and how squandered that potential is on the likes of those at Bungie.