Nice 1$ bills! In pretty good condition too! Unfortunately there really isn't any added premium for currency just because the serial numbers are in sequence. There can be large sequential runs of currency so it really isn't unusual! They are neat to hold onto though! In fact I have several sets of 3 or 4!!!!
The Standard method for distribution of notes from the Bureau of Engraving and Printing is sequential, so it's not unusual to find them.
You can actually go to your banks/credit unions and get one hundred strapped, uncirculated bills in their sequential order. Not all banks/CUs do this for their customers/members though. And this is common when those new, uncirculated bills are put into ATMs.
A lot of tellers don't like stacks of crisp notes because they stick and are hard to count. They were more than happy to give me new bills for a withdrawal. Many times the bank/credit union will mix new bills with circulated ones to make it easier for the tellers and less chances of counting errors. You can occasionally find good stuff in those straps. This ladder note is from a strap of 50 consecutive
Anytime you get new bills they are often in sequence. Without a special #, date, star, rarity or error it's just face value.
My brother picks up straps of $1 bills from the banks for the cash registers in his store from time to time. I don't think it's uncommon to get 50 in sequence when they are new. It's also pretty common to get sequential notes of whatever denomination from ATMs. Would be interesting to handle the piles of new bills going through banks while being knowledgeable enough to know what to look for. You could really pile up a bunch of those serial numbers that so many people seem to like around here. Hmm, the first note in this strap is 123456750..... Cha-Ching!! Hmm, the first note in this strap is 111111100..... Cha-Ching!!
If this is the first note in the strap, does that mean you have 11111111. A serial number on modern notes has 8 numbers (you show 9).