@ MBPAR- I hope you don't me chiming in on your questions directed to the OP. I had some data readily available that I could share since the subject was brought up on another thread recently. You can use it comparatively if you think it applies. The shipping charges are a standard $30 on average. I have 8 snakes, a few more than you, but the average food costs per snake might be similar. I also have carpet pythons and bull snakes that don't take food breaks like a BP might. That could bring the costs down further. I feed all my snakes every 7-14 days. This is my most recent Perfect Prey invoice from early January and I've still got about 2 months worth of feeders.
The way I see it is $273 to feed 8 snakes for 6 months is less than $6 per month per critter. You can't beat that.
Product Quantity Price Fuzzy Rats (25/Pack) (#Rat, Fuzzy (Frozen)) 1 $18.75 Small Rats (15/Pack) (#Rat, small (Frozen)) 2 $45.00 Large Rats (5/Pack) (#Rat, Large (Frozen)) 2 $27.50 Rat Pups (25/Pack) (#Rat, Pups (Frozen)) 1 $25.00 Weaned Rats (20/Pack) (#Rat, Weaned (Frozen)) 2 $50.00 Medium Rats (10/Pack) (#Rat, Medium (Frozen)) 4 $70.00 Day-old Chicks (25/pack) (#Day-Old Chicks (frozen)) 1 $9.75 Cart Subtotal: $246.00 Shipping: $27.89 via FedEx Ground Home Delivery (2 days) Out of state - No Tax: $0.00 Order Total: $273.89