TW125 - Exhaust advice

Hi all, had my tw125 for almost 3 years now gonna have 3 years no claims as a learner pretty embarrassing aye? anyway to get to the point exhaust sprouted 2 holes last Monday so that was a treat spending 2 hours after work in the halfords car park patching them. Anyway I am looking for a new exhaust and can't find anyone selling a original stock exhaust so I have been looking into custom exhausts.

Found one manufacturer in the UK that sells slip ons and complete systems: http://www.gpr-motorcycle-exhausts.co.uk/c/328/TW-125.html

And there is the exhaust section on tw-parts.com http://www.gpr-motorcycle-exhausts.co.uk/c/328/TW-125.html

Anyway I will probably be looking for a complete system so I don't need to think about it for a while, what I was wandering is both of the places listed have complete systems ranging from £300 - £400. I am a full time student and part time worker so I could find this amount of money but it would bleed me dry so does anyone know someone that could make me an exhaust for less than the cost of these 2 places?

I will be fitting it myself so fitting isnt a factor I need to build into the cost, I do all my own mechanics ... probably why it breaks all the time

- Sam