Welcome to CRG! Nice units. Holley undated reissues are $750-950 each, depending on the vendor and shipping. HBC has a dated matched NOS pair for $4,995 - but asking price does not equate to actual value. Cost of a proper basic rebuild would be around $150-175 labour, plus extra for parts, for each carb. Restoration including recoloring would be more, maybe double, but you'd do better offering them for sale as-is, let the buyer decide on survivor vs restored.