I am going to europe for holiday. DOEs any native can tell me if there is lots of fsh store or little? Ad how much is a 10 gallon tank
Depends where you go. In UK, a 35 litre tank (just over 9 Gals) is £80 GBP (or about $150 USD but my conversion is rubbish)... VERY expensive... Not too many fish shops, but a lot of garden centres sell fish over here.
Where are you going. Try googling some prices before you leave and add the country name so you can narrow your search down.