Inexpensive Rogaine Foam

Hi,

I've been using Rogaine foam but noticing that one bottle lasts less than a month (more like 3 weeks). I live in Canada and right now I've been paying ~$18/bottle (off eBay including shipping costs).

Does anyone has any recommendations for getting the product online at an even better price? And is there any difference with the Kirkland brand name version?

Thanks.

A popular place for cheap minoxidil http://www.minoxidil-direct.co.uk/

Not sure if they have Costco in Canada, but I get a 6 month supply of the kirkland generic foam for 59.99 i believe

I think it is much cheaper for US/Canadian guys to buy over the counter than for us here in the UK.