Mass produced cheap bikes

It's often quite difficult to know what these kinds of ambiguously structured sentences are attempting to say.

Are you saying that the 'London trendy types' only ride fixed wheel or single speed bikes because these bikes are expensive ?

Bloody hell... my post made no sense whatsoever: writing lab reports for the last 8 hours until 1am clearly frazzled my brain. Perhaps I should proofread them one more time...

I think I was trying to say that ss/fixed is considered desirable by a reasonable number of people only in the cities. Outside of the cities, a massive Saracen full sus downhill with 38947 gears is desirable for the average Joe. They're needed for those massive kerbs. And there are more average Joes. I just can't see most people people buying a £99 singlespeed over a £99 full susser.

I'm going to stop typing; I'm getting no where :s