Yes, both UpsellPlus and CommerceUp offer a Free Trial.
UpsellPlus is designed for Large Enterprises, Medium Business and Small Business.
CommerceUp is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for UpsellPlus Starts at $49/Month whereas for CommerceUp Starts at $1,000/Month.
Some top alternatives to UpsellPlus includes WooCommerce, 2Ship, BigCommerce and CommerceUp.
Some top alternatives to CommerceUp includes WooCommerce, Shopify Plus, BigCommerce, Square Ecommerce, Shopify, AmeriCommerce, Quick eSelling, Purchase Commerce, MyEasyStore and ICRM Software.