You're leaving out a ton of vital information such as your budget, preference on years of boats, power levels, how far you're willing to travel for one, etc. As for buying an east coast boat? I've done it 3 times before and have saved a ton of money each time in doing so. The first two boats were for 21' Arima's that I found back in Maryland. Bought the first, a 21' Arima Sea Ranger Skip Top for $16.5k back in 2017, owned it for 4 seasons and then sold it out here just north of Seattle where I live for $27.5k. Same with the other boat, it was a 21' Arima Sea Ranger Hardtop that I bought for $20k and sold it for $28.5k. Not sure where in the PNW you're located, but my parents and I share a beach cabin on Whidbey Island in the Puget Sound and while the Arima's do ok out there, they tend to pound while in the 1'-2' chop. After having the first one for 4 seasons and flipping the second for a profit, I decided that I wanted something bigger, nicer and much more comfortable. Sold them both and looked for a Grady White 228 Seafarer for just over a year before finding my boat, also ironically back in Maryland as well. It was in late September / early October 2021 and they were asking $28k for it. The problem was, the dealership required that everyone do business in person and you couldn't buy the boat over the phone and then have it shipped out to you.
So, I bought a plane ticket, emailed a copy to the sales manager, they put the boat on hold for me for a day, I flew out to Maryland and looked at it with another forum member on here. Put an offer down of $26.5k on the boat the first day which they accepted, the second day we did a sea trial run, and then they double checked everything on the trailer, and on the fourth day I rented a U-Haul truck and drove it the 3,009 miles back to Seattle. She's a 2004 GW 228 Seafarer with the hardtop, also has a 2004 Yamaha F225 with just under 1k hours on her and a 2009 aluminum I beam trailer. I've seen the same years of boats sell out here on the local Seattle Craigslist for $55k-$65k or more. Of course, those boats either had a kicker motor and/or radar, which mine doesn't, but the rest of the boat was pretty much identical. Also, a kicker motor and an inexpensive radar unit can be bought for less than $5k. So... long story short, yes buying a boat on the east coast can save you a ton of money and I quite literally saved over half of what I'd spend on the same boat out here in Seattle. Sure, I probably spent $3,500 - $4,000 on my expenses getting the boat back out here, but still I'm at barely $30k for the boat and still at half the price or less of what they sell for out here. Most shipping companies are probably going to charge around that same price of $4k+, but they'll likely be backdated a couple weeks just to get to the boat, and then another week or so to get it out here. If you're ok with doing that then by all means, a neighbor of mine at our beach cabin had a GW 270 Islander shipped out here from Florida last spring. As mentioned above, put some information about your budget, your preferences on a boat and so forth and you'll get some more people trying to help you out. Good luck!