I live in the SF Bay Area and prefer buying locally as a matter of conscience. But... I just priced the DR-6 right angle finder at local stores and it was priced at 246, 239 and 265 (closest store). Add almost 9% sales tax for a price of at least $260.00.
Adorama or B&H have it for $200.00, with express shipping (2/3 days) available for less than $20.00. Since my purchase does not constitute an emergency, I'll buy from them.
It's no wonder local stores are going out of business. The prices on the D300s are the same, but the "rip-off" pricing on the small stuff (like DR-6) keeps me away entirely.