4th Gen Looking to purchase soul silver

Hi, I'm looking to purchase a copy of Soul Silver, preferably, with the poke walker. I sold it around 2 years ago along with a couple of other games to buy a couple games on steam, that, funny enough; I never play. It was my first pokemon game and I regret selling it so much and I'm on the hunt for a copy that's not fake. I don't trust eBay as some of the prices just seem to good to be true. Also, many don't have the poke walker. At most, I'm willing to pay $70 or $75 for a copy containing the poke walker. I don't have a lot of money to burn being that I'm a teenager and I need money to go hang out with friends and stuff. Please could someone help me? It's my favorite game in the series and I want the full experience again.

You can always try Amazon.com. Do be aware that the resale/new value for HeartGold/SoulSilver are pretty high. I haven't seen any lower than $50 yet despite being released years ago. I mean a new copy on Amazon is going for $300.... but I did find this one for much cheaper lol.

I'm afraid if you want a real copy you're just gonna have to pay the high price, it's really hard to get a legit copy of SoulSilver nowadays :/