Can Photoshop Elements 10.0 (20110831.m17215) be upgraded or should I buy the 2019 version?

. . .  An "upgrade" does not affect the original installation of the older version.  You can have both versions present on the same computer.

jhill835  wrote The 2010 version has served me well for a long time.  Is it upgradeable?

No.

You can get a special 'upgrade' price (20%) for having an older version, but it would be still better to take advantage of the special prices for the Christmas period (-30%)

I need PS elaments with the tools to bring in a file and resize it and use the magic eraser