Yes, absolutely.
First, start with the Zone Chart, here:
https://postcalc.usps.gov/Zonecharts/
Enter the first three digits of the origin ZIP code. For Lancaster, PA, use 176.
In the table that comes up, find the zone for the destination ZIP code. For Cheektowaga, NY, use 140.
You will find ZIP codes starting with 120 through 154 are all Zone 3 relative to Lancaster, PA.
Next, go to the current postal price list, known as Notice 123, here:
https://pe.usps.com/text/dmm300/notice123.htm
Select Priority Mail Retail from the table of contents.
Look up the postage for a 30 pound package going to Zone 3.
You will find that the retail price is $29.85.
At the bottom of the chart, you will also find that your finished box needs to measure less that 108 inches in length plus girth. In my experience, shipping lightbars in a box measuring about 55" x 18" x 8" is fantastic. Girth is the belt-line measurement around the box, perpendicular to the longest dimension. For my example box, the girth is 18 + 8 + 18 + 8, or 52". The length plus girth total 107".
At the bottom of the chart, you will also find that large parcels going to Zones 5 through 9 will cost a fair amount more, as anything over one cubic foot is subject to postage prices based on dimensional weight. I believe the USPS is still more generous than other carriers in their dimensional weigh calculation. Far and away, I have found the USPS consistently the lowest price for almost anything I have ever shipped.
Please feel free to send me a PM if you would like any additional information.
