Update -- I do not see the trade-in offer on the Verizon site anymore, so the deal is dead.
Update - apparently I was double counting the $100 discount (the website is confusing) so I reworked the deal. Also removed the Note10 from the deal because that one is a $200 discount I was double counting and did not have time to figure out the numbers.
Verizon Wireless has lowered the price on the Samsung Galaxy S10 to $749.99. They currently have a promotion where you get $100 back in monthly credits for buying an S10 family phone, and will give you $350-500 for trade-in with a new line ($200-300 for an upgrade), so $150 or 300 after trade with a new line. The deal requires the 24 month Device Payment Plan, but I wasn't switching anyway. There is also a deal on the Note10 but it's not as cheap as I originally thought so I am removing it from this post.
List of phones eligible for the $300/500 trade (obviously many are not worth trading in):
iPhone 11 .iPhone 11 Pro, iPhone 11 Pro Max
iPhone X, iPhone XR, iPhone XS, iPhone XS Max
iPhone 8, iPhone 8 Plus
Galaxy S10, Galaxy S10+, Galaxy S10e, Galaxy S10 5G
Galaxy S9, Galaxy S9+
Galaxy Note10, Galaxy Note10+, Galaxy Note10+ 5G
Pixel 4, Pixel 4 XL
Pixel 3, Pixel 3 XL
LG G8 ThinQ™, LG V50 ThinQ™
OnePlus 7T, OnePlus 7Pro 5G, OnePlus 7T Pro 5G McLaren
List of phones eligible for $350/200 upgrade (a much more reasonable list, especially the older Samsung, Google and iPhones):
iPhone 7, iPhone 7 Plus
iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus
Galaxy S8, Galaxy S8+, Galaxy S8 active
Galaxy S7, Galaxy S7 edge, Galaxy S7 active
Galaxy S6, Galaxy S6 edge, Galaxy S6 edge+, Galaxy S6 active
Pixel, Pixel XL
Pixel 2, Pixel 2 XL
Pixel 3a, Pixel 3a XL
LG G7, LG G6, LG V40, LG V30, LG V35
DROID Turbo 2
moto z4, moto z3, moto z2 force, moto z2 play
REVVLRY, REVVLRY +
I bought the S10 yesterday at a local Verizon reseller for $750 but the salesman did not tell me about the $100 promotion, so I thought I was paying $400 (750-350). I only found out about it when I checked my upcoming bill and it showed a monthly credit of $4 in addition to the trade-in credit. So I will be paying $300 for upgrading my S7 that had problems (but was not damaged and powered up). I should add that I added a new line rather than doing an upgrade and did not currently have my S7 activated on Verizon (I had switched to an older phone), so I was able to get the new line deal.
The S10+ is $100 more.
They're also supposedly offering a free Verizon Stream TV box with purchase. Note sure how useful it is but hey, free is good.
If you switch to Verizon, you also get a $150 Mastercard gift card in addition to the other promotions for a potential MM (or course you have to stay a Verizon customer for 2 years).
Here's the page with the Samsung phones on it.