I have sold lots of Scrabble tiles over the past few years. I have a "supply" shop on Etsy that I used to sell them on. I could sell them for $6.50 for 50 there or $12 for 100. It seems like on eBay the going rate is around $10.00. I try not to pay more than a couple of bucks for a game at yard sales or Goodwill. Not a huge profit on them but every nickel and dime helps! I've got a set of the burgundy ones that I want to list today. We'll see how that goes!
Paid $1.69 - Sold for $10.00 plus $3.05 S&H - Profit - $6.90