well i hope that gpu mining days will come back, at least for some new tokens.
if you are talking about Bitcoin Gold here,it is fools gold more than bitcoin gold at the moment
they were designed to make bitcoin decentralised again (even stealing slogans from Trump)
and they stole more than just a motto,their replay protection is a copy of bitcoin cash's and it is not ready yet despite what they say on the ir site
so new tokens are not that hope inspiring
if you look at the current rates for two x480 there is no coin that will allow you to earn even 3$ a day
look at the Nicehash profitability test,download their programme and run it to see how much they are paying currently
so yeah,selling the cards and not continuing this arms race is the best idea