Stihl have taken the "home turf" thing to a whole new level in the States (maybe here as well). Over there dealers are only allowed to sell to those in their local dealership area. As I understand it - not just state to state, but city/region restrictions as well.
Whilst I agree with the premise of your argument, Stihl isn't the best one to use as an example. There are plenty of European based companies that try to exercise this turf thing, and also at least attempt to fix retail pricing. Festool was fined €8,000,000 (around AUD12,000,000) about 5 years ago for price fixing in Germany.
I would think, and certainly hope that a small company like Infinity would just have a single wholesale pricelist.
It might be an interesting example to try and pull apart. In AUD they are $40 in the USA, and $69 here. Assume 50% mark-up from wholesale to retail, which would give a w'sale price of $26.66.
Freight cost - not much, even by airfreight, in a decent sized box. Call it $2.
Import Duty, probably 5%, so $1.33
GST upon retailing at $69 would be $6.27
Cost of warehousing such a small item - nil
Total costs $36.26 unless I've missed something (maybe an allowance for Custom Clearance which would only apply to imports in bulk - otherwise airfreighting already looks after that)
Profit = $69.00 - 36.26 = $32.74.
That's ~90% profit where the US retailer gets 50% (by the earlier definition). I can't see that the Aussie retailer needs 40% more to cover the country differences. Perhaps 20%. A price of $59 to $63 would be fairer, and quite reasonable. A retail price here of about 150% of the overseas price (in AUD) is fine by me, depending on the freight costs etc.
It's certainly far from the worst example I've seen.