The optician with the cheapest prices can vary depending on location, brand, and specific products or services needed. It is recommended to compare prices from different opticians in your area to find the best deal. Additionally, some opticians may offer discounts or promotions that can make their services more affordable. **

The cheapest firecracker is typically a small firecracker like a Ladyfinger or a Pop-It. These types of firecrackers are small in size and produce a small pop when ignited. They are usually sold in bulk and are popular for their affordability and simplicity. However, it's important to note that safety should always be a top priority when handling any type of firecracker. **

Airfares are typically cheapest when booking well in advance, during off-peak seasons, and on weekdays rather than weekends. Additionally, budget airlines and smaller regional airports often offer lower prices compared to major airlines and busy hub airports. It is also worth considering flying to less popular destinations or being flexible with travel dates to find the best deals on airfares. **

Pine is generally considered the cheapest wood option available. It is widely available, easy to work with, and has a lower cost compared to other types of wood such as oak or maple. Pine is a popular choice for furniture and construction projects where cost is a significant factor. **

The cheapest game available would depend on various factors such as platform, genre, and current promotions. Generally, indie games or older titles tend to be more affordable compared to newly released AAA games. Additionally, digital storefronts often have sales or discounts that can make games more affordable. It's recommended to keep an eye out for deals and promotions to find the cheapest game that suits your preferences. **

The cheapest element is hydrogen. It is the most abundant element in the universe and can be found in many compounds, making it readily available and inexpensive to obtain. Additionally, hydrogen is used in a variety of industries, further driving down its cost. **

The cheapest car currently available on the market is the 2021 Chevrolet Spark, with a starting price of around $14,395. This compact car offers good fuel efficiency and a range of features for its price point. However, it's important to note that prices may vary depending on location, trim level, and additional options. **

The cheapest supermarket can vary depending on location and the specific products being compared. However, discount supermarkets like Aldi and Lidl are often known for offering lower prices compared to traditional supermarkets. It is recommended to compare prices and quality of products across different supermarkets to find the best deals. **