Wow, I've always preferred to buy local, because it's a pain and I do like to support local stores (even if it's a chain, they still stimulate the local economy and employ people). So I've used Rockler often. $14 for a 4oz. bottle isn't a bad deal at all. When you combine that with the $15 off of $50 coupon, you can get a bottle of each type and a blank or two for $35 (plus tax). Not bad.
However, with free shipping it definitely seems that Monty has better prices! $15 for 8oz is a great deal.
The idea of a fresh bottle is an interesting one.... Since his small bottles are still cheap, would it be better to buy in 1/2 or 1 oz bottles and just store the extras in the fridge? So, get eight 1oz bottles rather than one 8oz bottle, basically. The price is worse that way, but still better than using other suppliers.
Thanks,
Travis