Actually, LG has gone from the little cups that fit onto the standard (Chicken) trays to real quail egg trays. Having said that, $15 for either the trays or cups seams like a deal to me. You may get a better price online, but if all you need are the quail cups/trays, then $15 isn't a bad price for 1/4 lb. of plastick.
If you need the whole setup, bator,turner,quail racks, ect...
Then defiantly check out gqfmfg.com, or others to purchase the complete package.
I generally build my own bators and hand turn, but someone on this board (Sorry I don't remember who) recommended this package.
http://cgi.ebay.com/LITTLE-GIANT-EGG-INCUBATOR-KIT-for-small-size-birds_W0QQitemZ230375324039QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item35a3707987
I broke down and bought that one. Now I just need to build a hatcher for it, but I digress....
The cost of coturnix hatching eggs are another matter. You can buy eggs from people on the board (PM them for pricing and availability) If you want certain colors, or other, then you can pay top dollar and order eggs from a hatchery. Average cost $20 a dozen. It's a matter of what you want and what you are willing to pay.
I will be happy to reefer you to hatcheries or board members who have coturnix eggs for hatching.