Dough Trays

Ok it has been a while, but I have another question for the veterans of the board. Where did/do you buy your Dough Trays? I am on a tight budget right now. Also do you have one size of dough tray, or do you have different sizes for your different dough weights? If you have one size or multiple sizes what do you use?

i got mine from norseman plastics out of oklahoma they were about $7 each they have different colors so you can use them for different sizes