Thanks AA for the nice link and the positive thoughts on the Madeira Nr. 50 Cotona. With some more research, I finally found a good deal on the Aurifil.
Without shipping costs or tax included and this is in US dollars. I paid 6.99 for a 1100 yards of Madeira Nr. 50 Cotona which equals $.00635 per yard. I found this deal on Aurifil 50 at Craftsy: $8.35 per spool of 1422 yards which equals $.00587 per yard. If I buy it in their 4 packs it's $32.50 for 4 X 1422 = 5688 yards. So $32.50 / 5688 = $.00571 per yard.
Anyone buy something through this Craftsy? It looks like I have to create an account or they won't let me buy from them.
http://www.craftsy.com/supplies/auri...86376~reja49qx