Cheap Oscilloscopes - Is there one worth the money?

I would say it depends on what you want to do with it. If you just need to do the basics, I found a FNIRSI 1014D on Amazon, if you're an engineer and need extreme precision this ain't it. It will however do anything you need as far as project work I think, nothing I plan will need 1MHz nevermind GHz so.. I'm pleased with mine, let's me know if I have a signal. There are other options but this gives me a desktop unit with probes. The only drawback is the documentation is not for beginners but there are a few videos on it. An FYI for context, last time I used a scope was in 1981 Gr 11, this was pretty easy to get the basics of down and see if the project is doing what I want.  

https://www.amazon.ca/gp/product/B097T5NRTZ/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

https://mc.scsiraidguru.com/index.php/oscilloscope/

Siglent SDS1104X-E Oscilloscope

I bought this 4 channel oscilloscope and keep the firmware up to date.  I use it on many projects.  It was worth the purchase.