Shipping large boxes (headlights)

So I'm selling my old headlights on ebay and got an offer. Need to get shipping quotes tomorrow. They're going cross country CT to CO. Any idea what's the cheapest way to go that also easily accessible? USPS? Ups? FedEx? Also I think I can fit them in 1 box but may need 2. Better to have 2 lighter than one heavy? Any suggestions are appreciated so I'm not running around all day getting quotes. @Erichudgins you shipped lights to me...what did you find was best?
Thanks everyone

 

As long as its under 50 pounds, 1 box will be better, if you go FedEx or UPS. If you go with USPS, id look into the flat rate boxes they have, in that case 2 may be better.

 

I use the flat rate boxes to ship my maple syrup, I love them. Unfortunately they don't make them big enough to fit a headlight.

 

Fooled around with this for a minute. A single 50 pound box from CT to CO $79 while two 25 pound boxes cost $95+ to ship.

https://www.fedex.com/ratefinder/mobilehome

 

I used fedex if I remember correctly.. and I think it was right around 100 bucks for both lights. I would assume one box would be cheaper, just because if you keep it under a certain weight, the dimensions of the box is the determining factor.

 

You guys are awesome. Thank you