Anne,
I bought my Martelli rotary cutter at a quilt show. I live about 4 hours from Richmond, so I don't know much about quilt shops there. I did hear several people say that "Quilting Adventures" in Richmond is a good shop with a lot going on.
When I googled Martelli rotary cutter, I found that you can get them through Amazon.co.uk with free shipping. They come either for right-handed or left-handed people.
I have a cornea dystrophy and am losing my vision, so I experiment with different things to see if they help.
I bought a set of Spiral Eye needles. I do not like them at all. They are thick and hard for me to push through fabric. One of the three was very poorly made. It snagged the fabric every time I tried to make a stitch.
I like the Clover Desk Needle Threader. It is a little bulky to carry around for handwork, but it has worked well for me. You have to follow the directions.
I also like the Mighty Bright Handsfree lighted magnifier for hand-sewing, applique and threading needles at night. You wear it around your neck. It is not heavy. It really helps.
Best wishes,
Judith