is it worth to pay $895to get Gold Status with DL
If you fly enough on DL on routes that are easy for a Gold to get an upgrade, then IMO definitely worth it.
LGA-FLL for example -- I've taken six or so round trips in the last year, and been upgraded 100% of the time as a Gold.
JFK-LAX -- only gotten upgraded once in one direction between a few R/Ts
If I was going to lose Gold, I would definitely pay the $895 -- but that's based on the routes I have flown, and the value of the upgrades I've gotten (not to mention the value of free checked bags, extra weight allowance, etc.) If you fly to TLV on DL, you'll get three bags of 70 pounds as a gold (per passenger on your itinerary), plus access to the lounge.