Another how much!

[m.v.w]

Hi I'm currentley starting to save for a new horse. Want a youngster to bring on along side my compertition horse. She is a ID cross but would really like a horse bread for dressage. Would like a 1-4 year old max ( would consider a foal) as I like to do the work myself. And good breeding at least proven on one side. And not too big.
How much would I need to spend?
Man thanks x