I'm with lovinthehd on this one. You need to do the homework on this yourself by checking completed auctions on eBay to see what people actually paid, and you need to go to Audiogon and see if there have been sales as well and what prices people paid.
The power conditioner is nice, but they do wear out over time, but check pricing.
The Magnepan speakers have a lot of people asking $1,700-$1,800 online, but in reality aren't selling for that much...
https://www.ebay.com/sch/i.html?_from=R40&_nkw=MG1.7+magnepan&_sacat=0&LH_TitleDesc=0&LH_TitleDesc=0&rt=nc&LH_Complete=1
Well, except for a brand new pair sealed in the box.
So, I would take that $1,300 and call them gone if you have no interest in them.
Go through, do your homework on these sites and you will see what people are willing to pay, then go from there.