Steve Parkin on NB Albert has just written a great review of a book he bought for a five-pound song on ebay.
It was Through England's Waterways, by Montague Lloyd, published in 1948, and he concludes:
It certainly has been the best £5 I have ever spent on a second-hand waterways book and I am not talking about its resale value; I notice that the only copy currently on Abebooks is priced at £25!
What's especially great about Steve's 900-word review is that it's now the definitive internet link for this rare book. This is what I had in mind when I enthused about blogs for waterways users.
I hope my link helps.