Amazon has a 3-piece Fiskars Rotary Cutter Set (https://www.amazon.com/dp/B000B7K9UI?tag=quackdeals-20) for just $30 (original price $70), including a 45mm rotary cutter, cutting mat, and sewing ruler. This essential quilting and sewing kit is perfect for all your fabric cutting needs. Free shipping is available with Prime or on orders over $35.
(https://m.media-amazon.com/images/I/61FGxjPHXOL._AC_SL1000_.jpg)