Yes, it can work. You should test it out. However from experience, getting customers on a subscription is normally better, especially if you're looking for an exit in the future.
1. The price should better highlighted on the website, it's not very visible.
2. How do you even sign up to the plan? Add a pricing/purchase page.
3. $10/week is dirt cheap
4. If you're serious about this, please invest in better UX/UI
They've been doing this since April 202 [1]. Early reports also found on reddit with people being concerned. We too received quite a few of these emails over the last few days from various fake idenities and wasted time responding to one of them before realising it was not legit!
I can't imagine how much time and potentially money was wasted on these mass emails.