I bought some 6500K or so bulbs from the lite-brite or lite-more place, they were a cheap brand Sun ? something or other, they were not very good bulbs and they burnt out quickly.
For 6500K 55W or 96W bulbs the best place is
www.ahsupply.com, they deliver by US Postal Service to Canada, I just ordered some 55 Watt bulbs for something like $17.99 each.
For 9325K bulbs the best place is Atlanta Light bulbs but you need a US shipping address, I just ordered some 55 Watt bulbs from them for around $14.00
I have used both places a few times, the bulbs are good, the prices are low.