tielu/database/seeds/PriceInfoSeeder.php

<?php

use Illuminate\Database\Seeder;

class PriceInfoSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        $list = \App\Models\TemplateInfoModel::all();
        foreach($list as $item) {
            $item->price_info = $item->price;
            $item->save();
        }
    }
}