Any mark up after first sale is ridiculous. The only "markup" I think is justifiable after buying directly from the seller is the original cost + shipping + cost of shipping again. After that first resale, the price, including shipping, should not inflate. You did nothing to add value to the piece so you don't deserve to make a profit on it when there's a line of people wanting one. You're a scumbag if you buy just to flip. Those are no better than people who buy out the hot holiday toy of the year, then flip it on eBay or Craigslist to desperate parents at 300-500% over retail.
I'm outspoken on this issue though and I doubt I'll make a huge impact on anything.
Anyways, this discussion is taking a turn for another thread, not one that really belongs here.