I’m very curious what kind of quotes people get for drafting an APA

I recommend discussing a budget with your counsel at the outset to avoid any surprises. Agree that there are many off the shelf APAs, so the real expense comes in the course of negotiation, understanding the business, and tailoring the transaction documents to the specific deal.

The APA is one of the most basic pieces of legal documentation, where the only part which really makes a difference are the reps and warranties and how the purchase price is calculated. Otherwise it is mostly boiler plate. However, there are plenty of other legal services which can be more costly: legal due diligence, various contracts if applicable (rental, consulting), shareholder agreement if there is a rollover, other documents necessary if you have external shareholders/investors, etc. So all in all, I would explain the transaction to your legal counsel and ask them for an all-in quote, ideally with a cap and an abort discount.