Gaming system question

Star2236 thought this was worth mentioning said
1

A few years back on woot I won a brand new Sega genesis mini during their 12 days of Christmas giveaway (or something like that). Anyways it’s been sitting in the box not opened in my closet. I’ll play video games at friends house or with my brother just not so much by myself. So when I won it I saw that it was worth about $90 and today it says around $185. I was gonna sell but I’m wondering if I should hold on to it and sell it at a later date (hopefully for more money) or with the new Sega genesis mini 2 coming out at Xmas (they said even fewer are gonna be released than the first mini) should I sell it now?
I know nothing about gaming systems so any advise would help. Thanks.