Think of money that you want to spend on the purchase of Shamrox merchandise and then look for the price of each item. A team's signatured merchandise is generally more expensive than other products, and therefore you will need to have some money allocated for the purpose beforehand.
The best place to buy Shamrox merchandise is the stadium when a match is taking place. They set up its sales booths at the stadium for the interested fans and sometimes they have things on offer. However, it is a possibility that things bought at booths are more expensive than you buy online.
Search online, especially the website of the team, to select the merchandise you want to buy. You can then look for buying option directly from the team's official website or else browse other websites, especially the sport's representative bodies websites. These are two good sources for buying Shamrox merchandise online.
You can even search for the merchandise the auction websites like eBay. Generally, people sell their merchandise with team signatures at good price. However, make sure the product you are getting is a original and quality product. These days, copy versions of original brand are also sold online but it is better you get the original. That will be cheaper for you because the fabric used is of good quality and can last longer than the copy version.
If you do not want to buy on the internet and cannot go to attend matches, you can phone the shop of the team and get the items you want to buy delivered at your place. It is possible that buying over the phone might have some price benefits for you. So consider this aspect and try to buy products on the phone.
Whatever method you choose to buy the merchandise, make sure you make payment through a safe mode. Making secure payments can protect you from frauds such as phishing. Select the payment methods such as PayPal for the purpose. Get the products delivered to your postal address and if you suspect anything doubtful in the process, report it to the police. It can be that your credit or debit card details are being compromised and you can potentially be ripped off your money.