They're generally commonly known weaves so there shouldn't be any restrictions.
Another great source for kits and supplies is:
http://www.bluebuddhaboutique.com/
I do like Ring Lord, but if you live in the US and aren't buying much, the shipping costs can be steep (they're in Canada). BBB is generally going to save you some money on smaller orders.
The Ring Lord forums are a fabulous source for information and eye candy.
http://www.theringlord.org/forum/index.php?/index