You pretty much summed up how I feel. I was not even aware, until I found this board, that there were options that were only half the cost of the package we got. We both have very top-of-the-line equipment as that was the only option we were shown. They only had three fin styles to choose from in-store, all of them at or above $200 a pair, so we assumed that was a normal price. All their masks ranged from $70 to $100, again, we assumed normal price. All their snorkels were the same price, so it was a matter of color preference. There there is also the fact he pushed that we shouldn't look online and that we needed the high cost equipment because that was the only thing acceptable to buy. Had I looked online first (which I admit, I didn't even think to do until this week!) my husband and I both would have full dive gear sets for the price we have paid for the minimal gear we've gotten so far.
To clear up the thing about the BC - it IS a $500 BC, but the integrated Air II (alternate air source on the inflator) was around $200 extra. I like the feature so I got it.
You may regret that later when you have to share air and control your buoyancy while your inflator is in your mouth. A standard octo would have set you back 75 bucks or so. Some people like em I admit. Personally I'd not use one. If all his fins were in the 200 dollar range he's full of it as well. Most good dive quality fins start at 75 bucks or so. Even aqualung blades two are around 125 on the high side. Where are you located? My best wetsuit was a 380 dollar one I got for 250 with my pro discount. And whoever thinks that getting 10% off retail is a good deal needs to realize that may times MAP is with a 50%-100% markup. MSRP is usually 5-15% above MAP with many manufacturers. Short answer is this guy is a prick and he saw this class coming.