Good. Eventually they will probably be the same cost if not cheaper than HDDs.
I spent $39.99 on a 480gb PNY CS900 just the other day. In late 2018, $39.99 was roughly what it cost me for a Kingston A400 240gb SSD. In late 2017/early 2018 I paid about $35 for a 120gb SSD. Prices continue to drop dramatically.
These PNY CS900 drives aren't amazing, but I have owned half a dozen or so and haven't had any issues. A 500gb HDD is around $20-25. For a drive exponentially faster and probably farmore reliable, almost 2x the cost seems like a good deal.
I had a Corsair Source 240gb SSD. I noticed the mfg date was 2011 so I wanted to google hm it cost new. In 2011 a cheap dreamless SSD would have been between $300 and $400. WOAH.