Q: Flower Power iMac worth?

About $5.00 would be my guess. Donate it to your church or local school (if they will even take it) or to Salvation Army.

Try eBay!

As technology, it's not worth very much.  It may have nostalgic value, but if you sell it, the shipping cost is likely to exceed its asking price.

There isn't much about their potential value, as the

beauty & desirability is in the mind of the beholder...

If the unit is accurately described as FlowerPower:

• iMac G3/500 (Early 2001 - Flower/Blue)

Other specification models seen from this index:

http://www.everymac.com/systems/apple/imac/index-imac.html

For much newer models of Apple product, this site will show

current (twice yearly?) price estimate. This is too old for that.

Fewer vintage and obsolete reseller pages appear online

however I've seen some of these that look sharp and run

in a complete kit in local ads. You may get more than $20.

Especially if it has an original box in fair condition.

To realize an asking price, depends on who happens to be looking at the time.