I would be prepared to spend upward of 20K for a good quality younger mare, most likely unproven, with top bloodlines and easily 40K+ for one that is older and has some offspring going under saddle (if I could find one). I’m sure there are people who would spend more. Usually if you really like the mare, you pay the price :-).
On the other hand, a very nice, young broodmare with excellent bloodlines could cost somewhere between 20 and 30K without being overpriced. (And I certainly wouldn’t expect the hypothetical 45 foals that you mention… )
THANKS! That was the kind of answers I was looking for. (and me neither re: the 45 foals lol!!!)
45 foals? what are you smoking? lololol. You cant harvest ETs like candy. If you over harvest, the mare goes on strike for a while. And your 15K, hey, you just spent 5-8K on your ET, fed your recip and your donor mare- you have 12-15 into that foal by the time it is born. (plus which, of these foals, only some will actually be good enough to merit a good selling price)
But that isnt your question, I know.
Bahaha I know I know… It was an over-exageration, to strech the possibilities of # of foals to a barely-possible maximum… An illustration let’s say. In french we would use the expression: “streched (or pulled) by the hairs” but I don’t think it has its equivalent in english expressions 
I was only trying to do some maths because I know that there’s small if any profit at all to make in the breeding horse business, and I know also about all the “think for more than one generation”. But at the same time, I can’t believe that NONE of you are keeping records of costs for producing foals, and when buying a new mare, you don’t have in mind how many foals she possibly can give you before retiring, or in what price range you can expect to sell them or not, if they are decent to good, to very good. That you will sell your house and husband for the better good of breeding because a great mare is “invaluable”… We have all bought mares for breedings and I doubt there’s many among us who jumped on a 18yo mare and paid 300k for her just because… oh look! she’s the dam of 5 approved sons, her damline is stellar, she’s still lovely and let’s forget about the price because she might give me a filly to retain before she is too old! (OKAY… that kind of mare is not for sale in the real world… I k.n.o.w.)
Top mares rarely come for sale and IF they do, they are generally older (breeder already has daughter(s) to carry on line) and they are often only for sale to someone the breeder knows personally or through connections.
I know that too. It was a theorical (theoritical??) question. Only.
I was not looking on advices like buy the best you can,etc. I already know that and work on building something decent, with the means I have. I just tought it would make up for a nice conversation, about what is a decent price limit for the perfect mare… to YOU personnaly, wether in real life you have or not that kind of money to put on a mare. See… when I hear that someone spent 50K on a DRESS… I find it is obscene. But some will think it is perfectly decent if you love the dress…
My question was more… that for the ones who have no budget limits, or very large limits or who says “an arm and a leg”… What your arm and leg worth? What IS your limit for the best mare? 50k? 100k? 200k? Do you know anybody who paid in the 6 digits to buy a mare for breeding purposes only? How did it turned out? Did the mare started a legacy for this breeder? Did her foals sold better than others? Was she worth that extra 0 at the end of her price tag?
I would love that a french forum like COTH exists, I’m sorry if sometimes I am not clear in what I am asking. My level of english is probably not high enough for me to be more precise or subtil in my phrasing of questions 