Hi,
Meds prices are cheaper in Canada in general, I think. I have not used any other pharmacy. The vial, I believe is $150, same for the pack of 5 pens, the shipping costs is $25, they can add extra ice packing for another $10 but it's totally optional - I ordered in July and needed extra caution against the heat at the time.
Have you got a chance to check the Supply Closet Forum?
HERE is the link to a recent post from a reputable member - you can get a single pen or a couple from him, not the whole pack of 5 - that'll save a lot.
My cat is on 1U Lantus x 2day. I keep pens refrigerated and it'll last on that dose for several months - many here use their pens to the last drop. I used to have a vial of Lantus but now I prefer pens.
I use Relion 3/10 ml cc capacity, gauge 31, 8 mm syringes with
half unit marks on the syringe barrel from Walmart to draw the insulin from the pen - it's about $3.00/10 syringes.
Please let us know if you have any questions.
ETA: the best deal on Lantus vial I could find in California was $265, my vet could sell me one for just over $300.00

. Opted out to buy from Canada - many here do.