Newegg offers the BEYBLADE: Evolution Collector's Edition for Nintendo 3DS for $9.99. Apply coupon code "VISACHECKOUT" and checkout via Visa Checkout to drop it to $8.99. With free shipping, that's the lowest total price we could find by $5. It comes with a limited edition Wing Pegasus 90WF toy. Deal ends October 31.
Note that the above coupon is limited to one use per account.