Evaluate Timing chain sets

What's the cost of a decent SB belt drive these days? How long do the belts last?
Jessel. The dist. was $780 the belt drive was $1580 we can use our CSR water pump on it. My son may sell our timing cover we won't be using it. Or the fluidampr. The one pictured below is what we ordered ours is still in the box. Cam and dist are belt drive.

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