I've been checking locally and in the US for 20" tires and you just cannot beat the US pricing. I'm looking at savings of around 50% from local pricing which means I can put the savings into new wheels to soften the spend. Since I'll be taking a family trip shortly to the States I'll just order the tires and pick up at one of those US address depots.
'15 Ford F150 Lariat SCSB 4x4
'00 740i Sport