Do you mean how many were sold? If so, do you mean as her or as Red Arrow that purchased the rights from her? Either way, I think each model was probably in the dozens or hundreds. The kits were expensive and while impressive, still did not have a lot of detail. I have her Gemini Titan and Saturn V.
I was figuring $550-$575. The price was why I was asking about production numbers as you certainly don't see many of her models for sale. I'm waiting to find a Saturn 1b that has not been started.