@Anonymous, thanks for a great question!
I will reply to it here, so that everyone could see:
Q: I do have one question regarding the functionality. With this plugin, is it possible to include a discount on the after checkout products? It would be very nice if that was incorporated as well, so my upsells could be done at a discount to further encourage the sale.
A: Absolutely! with this tool (One Click Upsells for WooCommerce) you can easily discount the after checkout product and set a special upsell price for it. Without changing product's main or sale price! Details here: https://bogdanfix.com/ocu-woo
@Dev, unfortunately Smart Offers & Buy Now (2 plugins!) support only Stripe... While 1 Click Upsells plugin (all in 1) supports many popular gateways like PayPal, Braintree, Authorize.Net, Stripe, Payflow Pro and others.
Also the 1 Click Upsells plugin is simple and intuitive, you can start getting new upsell orders in a couple of hours, while other plugins are too difficult to setup and understand.
@Adrian, just sent you an email.
P.S. If you are reading this message and interested in the solution, here is the message for you: WooCommerce 1 Click Upsells plugin is ready and integrated with Stripe, Authorize.Net, Adyen, Payflow Pro. Guys using it, keep telling me how awesome it is, and how they returned this investment in 2-3 days after enabling 1 Click Upsells.
Braintree and PayPal are on their way (I am working on them) and will be ready in a few weeks, stocked with couple of new features like: upsell statistics, upsell in popup window.
If you are interested, please tell me your email here, so I can send you a demo, cause it's still a closed beta testing: http://eepurl.com/bNTXyv
Thank you all guys, for your awesome feedback and support.
Thanks Ben. I am sending access to demo myself, and you just got one.
@Steve, I have. Please, follow through the link in my previous message.