Buying 6apb? Double check my math, but it seems like SI comes out ahead

I was interested in ordering 3-5g of 6apb and 3mmc prices are excellent. If it's really 5g for 85 I would do that, but I was disappointed by the super high shipping. Scientific innovation has higher prices, but it's 70/2g, minus 10% when paying in BTC and only 3.5 in shipping, not to mention their fumarate is reportedly about 2x as potent as succinate. That comes to 63+3.5=66.5eu /2g fumarate, the equivalent of about 4g succinate. That means the price of 16.50/gram.

3mmc price is awesome at 85/5g = 17/gram,but the shipping makes this way more expensive than SI. (85+30=115/5 = 23/g.)

RGN price is 90/5g,minus a 5% discount for orders over 100 (I'd order 4fa too), so price down to 85.50eu +18eu shipping for 5g. 98.50/5g =19.70/gram

Desire higher upfront prices, it seems that SI is the way to buy 6apb,assuming my succinate to fumarate of 2:1 is about right. After that comes rgn, and 3mmc is last bc of the insane shipping charges. I didn't check Labsense.nl on here but it's prices tend to be similar to rgn.

Anyone agree/disagree?