more guidelines would help us give you useful answers...
many considerations. type of glass you want to use...
where you are. Shipping can run a huge amount and if you are close to a decent dealer it can save you a small fortune to pick it up- that then makes your who choice for you.
what is important to you? how much do you want to spend for a first order? averageing $12/lb or averaging $24/lb? what quantities do you want to order in? full pounds? single rods? different sellers have different options available.
by all means lovely glass to work with is easy to suggest... the seller that best fills your needs is a bit harder to suggest with no info...
A.