If you need seed-based treats I've found
That Pet Place seems to be the cheapest. They have really good prices on Avi-cakes, Nuttriberries, naturally dried fruit mixes manzanita perches, and toys. Shipping is not as cheap as it used to be, but it's not as insane as some other places. If you feel uncomfortable about ordering online, you can do the reasearch online, and then call your in order. Ordering Number --- (1) 888.842.8738. Customer Service --- (1) 800.733.3829.
I've been making purchases from this company for over 11 years. They are reliable, and I've never had any problems. Most places that offer food/ treats cheaper, do so because they get in old shipments at a discounted rate.
That Pet Place has fresh food, and I've never received anything 'Old'!
The only place I've found to get Roudybush from is
Dr's Foster & Smith. Their Roudybush is fresh, and they have a better selection of toys, but they are a lot More expensive. The shipping is also much, much higher! (Although right now they're have a $5.99 special on shipping.)
I've been making purchases from Dr's Foster & Smith since they were Harrison's, and while I still purchase pellets, and toys from them I do not purchase their seed mixes anymore. Harrison's used to have a quality seed blend that was better than many private stores, but after Dr's Foster & Smith bought the company the quality went Sharply Down Hill.
Regardless, I do not need seed anymore so it is not an issue for me...