For solid color, I've purchased from Imperial Textile on eBay. Not cheap, but real heavy, nice quality, vivid colors, and (most importantly) they iron like a dream.

I buy a lot at thrift stores. Sometimes the ones I find are brand new, sometimes they appear to be ones that are banquet cloths that a rental company or hotel have cleared from their inventory, and sometimes they are personal donations. I have found some really lovely and expensive cloths, but just like anything at the TS's, one has to be cautious and examine everything before buying. The most recent one I bought was a cream cotton sateen with appliqued and embroidered eggs, flowers, and ribbons in pastel colors and also some cutwork. It will be appearing shortly in an Easter tablescape! I saw some similar ones in Home Goods and they were almost $30.

Home Goods, Ross, Marshall's and Big Lots are other places I hve found some tablecloths at reasonable prices.

Good Hunting!
Candy

Home Goods and WSonoma. I really like to buy fabric and make them, that way you have something different.
Quilts, throws, duvet covers, all make good colorful cloths too!

I have been getting tablecloths from www. Boscovs.com outlet. They are great quality, inexpensive and fast shipping.

Kath

I found several very nice tablecloths, napkins, and placemats for great prices last year by shopping the on-line clearance sections of stores like BB&B, JCPenney, Kohl's, Macy's, etc.

J.C. Penney has nice solid colored tablecloths, napkins and table runners and when they are on sale, they're pretty reasonable.

This is a great question and I will have to go online and take a look. I buy most of mine at Ross, TJ Maxx and Dillards. I always look when ys but never seem to find any.

Punk