Unfortunately, I seem to have disturbed some hornets!!
Whilst the seller's replies to Frank are somewhat terse, surely it is quite understandable? Why would they need to check the internet before selling?
If they have a copy of "Ysart Glass", then by looking at the b/w catalogue at the back they could very easily think the shape was a variation on either 'FA' or 'PC'. The crackled surface is also extremely similar to to that of Monart Cliosonne. The seller, and his agent would naturally be expecting a good sale...........and it's been spoilt. They may even have gone out on a limb to buy the vase, and are unable to return it to their seller.
Most of us would be irritated. Now, I know that there are far better ways of replying, but we're not all the same - it could even have been worse!
Maybe it's better to start from the premise that when sending information that is likely to affect a sale detrementally you're all, but inciting a bad reaction?
My motivation in drawing folks attention to the sale was to let them know that this series of wares exist - and to take note.
At the price at the time anyone could have been buying the vase as a comparison piece, as Frank suggests, but instead the auction has been stopped by the ebay seller.
Of course, it's a good thing that nobody overspent, but let's not assume the seller was trying-it-on, and maybe spare a thought for how they get out of the problem. Yes, this is a risk that any dealer, or collector for that matter, takes, but it ain't a nice feeling when you find out you've made a mistake.