As far as pricing goes, our shop based a lot of pricing on the Sign Contractors Pricing guide. We don't adhere to it strictly, but it helps get us in the ballpark. SignCraft also has a Pricing Guide out there that may be helpful. I also have talked with a few "old-timers" that go with the 400% + Labor &Shop formula. That is to say, find your material cost per sq ft and make sure to charge 4x that. So if you purchase a 651 roll 24"x50yd roll at $85.72, your cost per sq ft is $0.34. That means you should be (at minimum) charging $1.36/sqft material. Then you have your artwork/digital conversion of artwork time-I would spec this job right at 1 hr or $75. Once that's done you'd run your shop fees (power, machines, consumables like ink or cutting blades). This is something that will differ from shop to shop. We run an easy $5/sqft shop fee. Some people include transfer tape in that charge, some don't. So now we're at $6.36 /sqft and you used (I'm guessing by the image) about 50 sqft of material. (Yes, count the drop material not just the material on the truck) Finally, price your install. We had one installer charging us $5/sqft and his stuff was only good enough for fleet vehicles. We now use an award winning, 3M certified installer that charges $3-3.75 sqft (depending on complexity). So let's say he'd charge $3.50 for this job. Toss on $1 because you've secured the work from a reputable installer and we're at $10.86 /sqft.
50sqft of job @ $10.86/sqft = $543. + your design time. $618 +tax would be around the ballpark of what a majority of people would charge.
But this is just an example - maybe it's low, maybe it's high. Just my two cents -