So, back during Black Friday I got this ( https://www.amazon.com/gp/product/B07GG62872/ref=ppx_yo_dt_b_asin_title_o07__o00_s00?ie=UTF8&psc=1 ) for like $1297 USD total, and I am really not sure whether I actually got a good deal considering what they did cheap out on (namely the PSU) and considering everything I'm hearing about how bad the support is. The difference between the one I got and the one in the link is the motherboard, which they switched from a X370 to the B450 towards the end of December or something. Now, my real question is whether or not I should keep it when factoring in how much I paid for it and got compared to what I could get for a similarly priced system now, or whether I should refund it to Amazon (I've got like 5 days left before that window ends) and just find some other pre-builder/pre-built. I don't want to build it myself unless I can only get similar specs for around $100-$150 cheaper doing so when compared to all the pre-built options.
Oh, and as far as current problems with the machine I have now, about a month ago, a somewhat faint grinding noise (which sorta happens in pulses) started appearing and disappearing every 10-20 minutes while on (noise only lasts for a minute at most), and I honestly can't tell whether it is a case fan (my guess), or possibly just a noisy HDD. Anyway, any help is definitely appreciated!
EDIT: Budget is like ~$1400-$1500 USD
Oh, and as far as current problems with the machine I have now, about a month ago, a somewhat faint grinding noise (which sorta happens in pulses) started appearing and disappearing every 10-20 minutes while on (noise only lasts for a minute at most), and I honestly can't tell whether it is a case fan (my guess), or possibly just a noisy HDD. Anyway, any help is definitely appreciated!

EDIT: Budget is like ~$1400-$1500 USD