I'm quite content with the about 90 razors I've got. I've sold and pifed quite a lot. Even so I still pick up a razor now and then. If the price is right and the historical and/or esthetical value is high I see no reason not to put a bid.
Yup, that's about where I am...fairly content with the 90-120 razors I have, all are shave ready, and I'm content at any time to pick up any one and enjoy shaving with it...my latest pick-up was a Mappin Brothers Lancet Edge razor, that one's been on the list for awhile, but other than that, same for me, historical or unique blade, then I'm interested.