Tektronix 2225/2225ST

[phetus]

Got a crusty looking Tektronix 2225ST, thinking it was a normal 2225 yesterday. Doh! Don't use ebay when you're half asleep! 

Is there any difference between the 2225 and the 2225ST other than that the ST has a storage function? And is 80€ too much?

Couldn't find much info online anywhere. Here's the ebay link: http://www.ebay.com/itm/Tektronix-2225-Oszilloskop-2-Kanal-50MHz-/191493220350?nma=true&si=Nw0Em0UX5u9woyjRy%252FA%252BhiXz%252Fsg%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

Thanks in advance!