yes there are fakes in the market....they do exist.

ive seen an MTX comp set before... on the speaker the logo looks alot like the original MTX...but upon slightly closes inspection u can see that its actually MiX instead of MTX. even the shop where i saw it themselves say that its fake.

and since the shop near ur hometown says there no fake bla bla bla.... i personally wouldnt go back to that shop ever again.