well i dont have any problems, if you build a total full mod escort to take the power of a yb cosworth my mk2 stands me over £25.000 and still not finish't and thats still a cheep build compare to other cars. if you buy a fully working 4x4 cosworth saff around £2500-£5500 then pick up a mk1-2 from £1000-£3000 body parts extra around £1000... you can build a saff body base, big arch 2wd or 4wd mk1-2 escort for £10.000 or less thats if you build it your self...
And i do know that people have built cossie mk1-2's for less they not the best but they have done it!
Its always best to ask the right people who know were get the cars or parts from...