I know this is alright because I went to an Abbey once where this is more or less what they did with Rosaries blessed by the Holy Father.
Seriously, I need advice on this, since simony is a serious sin. Any objects which we know are blessed should not really be sold. Perhaps I can ask for the cost of the postage to send the object on, as a service to the Catholic community, rather than making any profit out of it, for things like Rosaries. Only one of the objects posted so far, I know to be blessed. I'll remove the price tag for now, on Our Lady of Montserrat.
Nice postcard isn't it? Looks quite good in black and white too, when scanned in.