Gold is cheap in BG3 at the moment, but then again, we haven't seen vendors with much to offer - plate armor for instance is normally considering a luxury at level 4 due to its' high cost in table top and learning new spells as a wizard is costly. I'm at 30.000+ after having completing the available content and I have not bought anything as nothing seemed to be necessary. I hope they scale down the options to make large sums, especially from selling used weapons, armor and such.
Oh and I should add that spell components seem to have disappeared entirely, removing one of the largest gold dumps in the D&D system. For those who don't roll dice, a lot of the more powerful spells in D&D such as Revivify (which is now a scroll for some reason) requires the "sacrifice" of a 300 gold piece diamond.
Pretty much this. In Baldur's Gate 1 and 2, or games like Dragon Age Origins, gold felt valuable and retained value for a long time. The adventurers mart sold many powerful items at an exceptionally high price, so the player was saving up to purchase them. This game is obviously more similar in scope to BG 1 than BG 2 considering its a lower level campaign, but regardless of this there should be items which hold some value. It gives the player something to look forward to spending gold on. The only item I bought during the entire EA was the Amulet sold by the shop in the underdark which added 1d4+1 psychic damage to each missile on magic missiles and in my opinion, while the item was very good, its price should have reflected that and being priced at something more along the lines of 10,000+ gold.