Looking for an inexpensive folio case - Dell Venue 11 Pro Model 7130 / 7139 with Intel i5 processor

I'd appreciate any suggestion on where to find a Tablet Smart Cover / Folio Case - Dell Venue 11 Pro Model 7130 / 7139 with Intel i5 processor. Similar to this VSTN case, but for models with i5 processor http://www.amazon.com/windows-ultra-thin-Multi-Angle-Version-tablet/dp/B00JO9O0JA/ref=sr_1_6?s=pc&ie=UTF8&qid=1402756313&sr=1-6&keywords=venue+11+pro+case