I'll go ahead with items they're sold out of anyway...although, I really would have liked to use products they have in stock, so it's a fair comparison. Oh well.
MagicProShop:
* Million Dollar Book Test -- $119.99
* X3 Book Test -- $78.35
* Universal Impression -- $49.00
* Classic Vernet Thumb Tip -- $2.94
* Bicycle cards (poker sized, red) -- $1.69
* Cups and Balls (Aluminum) by Uday -- $13.35
MJM:
* Million Dollar Book Test -- $105.26
* X3 Book Test -- $69.80
* Universal Impression -- $43.61
* Classic Vernet Thumb Tip -- $2.61
* Bicycle Cards (poker sized, red) -- $5.77
* Cups and Balls (Aluminum) by Uday -- $10.43
Note about regular bikes: You can get a brick of 12 (6 red, 6 blue) for $13 at Costco, which beats both of those places.
Also note: Both sites offer free shipping.
So yeah, while it may be a better place to get some regular Bikes (the ONLY item that was in stock that I searched for), it doesn't look to be great for much else. It's out of stock on almost everything that I searched for (those items included in the above list, as well as a few other common things), and even so, it was more expensive on everything anyway (aside from regular Bikes). And when another site
does have something cheaper than mjm (and it's in stock), they will price match anyway.
And I've heard Penguin has really good prices, along with free shipping, too. I don't shop there, but I've heard many good things about the prices.
Oh well, to each their own. I'll continue shopping at MJM (and a few other sites--it's nice to support Theory11, Papercrane, E, etc).