Genuine cheap SD/MicroSD cards?

I want to get a 128gb for my Galaxy S5 but am naturally a cheapass. I read some reviews that a lot of the foreign knock off ones or repackaged are actually fake and have substantially less capacity despite being read to have the actual capacity.

What websites do you guys recommend for genuine cheap SD cards if such a thing exists?

Cant ye get them from amazon ? If not then yer local store is yer best bet.

If ye need recommendation on model to get, I'd recommend the Samsung Evo or the Sandisk Ultra . I have both and they give me pretty good RW speed.

Best Buy is selling a Samsung 128GB card for $45.