So, they are playing in the Boston area May 18th; tickets went on sale March 21. They are playing at the "Tweeter Center" which is an outdoor pavilion.
The regular seats are "covered" (not subject to rain), those seats are $125-$200!! What we/they call "lawn" seats (essentially you sit on the lawn, uncovered/"open air", at the back of all of the other seats) are $35-$50. IMHO lawn seats are like paying to sit in the parking lot and listen.
I would have considered going, but no way I'll pay over $125 base for each ticket.
That being said, if you want to go alone, a $214 (with fees) ticket is available about 15 rows from the stage. The nice thing about the Tweeter Center (formerly Great Woods) is that all seats are stadium-style (each row slightly higher than the one in front of it).
This show is part of a local radio stations annual Concert including: Featuring: The New Kids On The Block, The Jonas Brothers, Ferras, Metro Station, Ray J, Natasha Bedingfield, Sara Bareilles, Wyclef Jean, Sean Kingston, Boys Like Girls, Flo Rida, Cascada, Baby Bash, Leona Lewis and more to be added. Line up subject to change without notice.
The other show currently listed is the same (part of a lineup); perhaps these are just teaser appearances before the full tour?