In the latest version of WooCommerce Boost Sales provides you some fix and many new features. WooCommerce Boost Sales version 1.4.0 changelogs. Fixed: Variations selection problem of Upsell. Fixed: Rearrange bundle items. Fixed: Conflict with Contact Form 7. Fixed:

Up-Selling & Cross-Selling to increase your revenue  Acquiring a new customer often costs around four times more expensive selling to a familiar customer. The most highly-valued business practices to achieve this are up-selling and cross-selling. In fact, the two methods