Wholesale: $2.5k to $6k.
Retail: $25k to $60k+ or more for the perfect end user.
E+Word.com aren't as hot as they used to be but if a combination makes sense, has tld demand and is relatively future proof i.e eDVD vs eStream, eSports etc, there will still be good value because in the end, short names like this make compelling brands.
Read is a word that works extremely well with the prepending letter "E". Probably one of the better combos and I think it fits well in the ebook niche as it could be an ebook reader but it could also be an entire platform etc.
Here is a look at some similar sales over the past few years, most of these names were purchased at auction by domainers.
e
bike.com 71,938 USD 2018-02-16 DropCatch
eplay.com 60,000 USD 2017-10-12 Flippa
ephoto.com 37,000 USD 2015-12-23 NameJet
esoft.com 30,000 USD 2017-05-04 Sedo ---> Sold by Np'er. View the domain sherpa episode>https://www.domainsherpa.com/joshua-reason-esoft-flip/
eking.com 28,000 USD 2018-11-19 Sedo
esolar.com 20,750 USD 2019-07-25
GoDaddy
emark.com 17,500 USD 2015-06-10 Sedo
ecart.com 15,700 USD 2017-03-31 SnapNames
esurf.com 15,000 USD 2017-10-26 Sedo
eshare.com 12,750 USD 2017-10-05 NameJet
esafe.com 12,550 USD 2019-06-01 DropCatch
etaxes.com 7,500 USD 2019-05-04
GoDaddy
eblunt.com 7,000 USD 2015-02-08 Uniregistry
ecolor.com 6,751 USD 2016-08-07 SnapNames
Source: Namebio.com