1. Mary is a self-employed interior designer in Brisbane, Queensland. Mary purchased a purpose-built computer for her business from Glen at Computers R Us Pty Ltd (‘Computers R Us’) in March 2022. In April 2022, Mary accidentally spills hot coffee on her new computer and the computer immediately stops working. Mary took the computer back to Computers R Us in April 2022. Glen says that the repairs will cost $1500. Mary agrees to the repairs. While her computer is being fixed, Mary gets a call from Jim who asks Mary to redesign his 10-storey commercial premise. This is a very lucrative opportunity for Mary. However, the redesign must be completed within 2 weeks otherwise Jim will take his business elsewhere. Mary agrees to the tight timeline. Mary immediately calls Glen to ask when the computer will be repaired and explains the situation to Jim. Glen explains that the repair work is more extensive and expensive than he originally quoted. The repairs will now cost $3000. If Mary agrees to the increased price, Glen can have the computer fixed within two days. Mary is furious and feels like Glen is taking advantage of the situation. Reluctantly, Mary agrees to the increasing cost of repairs. Mary gets her computer back in 2 days and completes the redesign work for Jim. Mary wants to know if the contract with Glen could be unenforceable. 
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3. Advise Mary.