How big is market for replacement doors

[ginsters]

I've done about 2 a year up untill this year and I've done 6 4 of which were kitchens I put in around 10-8 years ago

There are a lot of dogy units out there but most are now getting to par unless they are shed ones I've done loads of site fits in the last few years and the quality was exellent pws doors etc and carcases made to order so before long the life of a kitchen structualy will increase also designs of kitchens in new houses are more thought through so there should be a market for face lifts,but why comit to that when you buy doors from many places?try a ad run in the local paper get some samples of people like east coast fittings etc