Please can someone help me out.

my bottom end on my Turbo is prity much fooked, its cracked 2 pistons and the con rods dont look to healthy,
so i have been pricing up how much a set of low comp pistons are to replace mine, and a set of new con rods and a re-bore just be be safe.

the pistons are £400
the con rods are about £100
re-bore about £80ish

so i recon im looking at about £600 to re-build my bottom end. so if the standard CVH bottom end is going to cost this,is it worth going down the ZVH route instead.
so what i need to know is how much roughly is a 1.8 zetec bottom end going to cost to have built in parts and machining.

i dont want to go 2.0l really, 1.8 is fine for me.

cheers