I went to my local framing suppliers today for some mountboard but also bought some blades for my mat cutter they come in 5's only. No issues here but they don't stock many,

When I got home I did a search as I'd like to buy 50 or 100. What shocked me was the price differentyials between the UK, US and Australia for the mat cutter itself.

Amazon.com (US) Dexter mat cutter US $27.25

Amazon.co,uk (UK) 38.31 - US $61.67

Australian ebay AU $65.50 - US $68.58

The replacement blades were actually not far off the same price which was surprising.