I live in norway so no walmart etc stores here 
Only 3 large retailers that do overall gadgets in walmart style but not walmart prices or selection sadly.
So its either small fans ment for bathroom exhausts at 15$ or the engine cooline fans i found at 30$.
Next is industrial gear at well not so fun pricing.
on the plus side i do have 12c or less outside 10months of the year, so semi-cold air to use.
downside is that since there is at most 1hot week of summer, there is no demand for diy A/C etc
Only 3 large retailers that do overall gadgets in walmart style but not walmart prices or selection sadly.
So its either small fans ment for bathroom exhausts at 15$ or the engine cooline fans i found at 30$.
Next is industrial gear at well not so fun pricing.
on the plus side i do have 12c or less outside 10months of the year, so semi-cold air to use.
downside is that since there is at most 1hot week of summer, there is no demand for diy A/C etc